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Escherichia coli Metabolite Profiling Leads to the Development of an RNA Interference Strain for Caenorhabditis elegans
- Source :
- G3: Genes|Genomes|Genetics, G3: Genes, Genomes, Genetics, Vol 10, Iss 1, Pp 189-198 (2020)
- Publication Year :
- 2019
- Publisher :
- Genetics Society of America, 2019.
-
Abstract
- The relationship of genotypes to phenotypes can be modified by environmental inputs. Such crucial environmental inputs include metabolic cues derived from microbes living together with animals. Thus the analysis of genetic effects on animals’ physiology can be confounded by variations in the metabolic profile of microbes. Caenorhabditis elegans exposed to distinct bacterial strains and species exhibit phenotypes different at cellular, developmental and behavioral levels. Here we reported metabolomic profiles of three Escherichia coli strains, B strain OP50, K-12 strain MG1655, and B-K-12 hybrid strain HB101, and also different mitochondrial and fat storage phenotypes of C. elegans exposed to MG1655 and HB101 versus OP50. We found that these metabolic phenotypes of C. elegans are not correlated with overall metabolic patterning of bacterial strains, but their specific metabolites. In particular, the fat storage phenotype is traced to the betaine level in different bacterial strains. HT115 is another K-12 E. coli strain that is commonly utilized to elicit an RNA interference response, and we showed that C. elegans exposed to OP50 and HT115 exhibit differences in mitochondrial morphology and fat storage levels. We thus generated an RNA interference competent OP50 (iOP50) strain that can robustly and consistently knockdown endogenous C. elegans genes in different tissues. Together, these studies suggest the importance of specific bacterial metabolites in regulating the host’s physiology, and provide a tool to prevent confounding effects when analyzing genotype-phenotype interactions under different bacterial backgrounds.
- Subjects :
- microbe-host interaction
QH426-470
Investigations
medicine.disease_cause
03 medical and health sciences
0302 clinical medicine
Metabolomics
RNA interference
C . elegans
medicine
Genetics
Molecular Biology
Gene
Escherichia coli
Genetics (clinical)
Caenorhabditis elegans
030304 developmental biology
0303 health sciences
Gene knockdown
biology
Strain (chemistry)
c. elegans
biology.organism_classification
Phenotype
metabolism
030217 neurology & neurosurgery
Subjects
Details
- Language :
- English
- ISSN :
- 21601836
- Volume :
- 10
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- G3: Genes|Genomes|Genetics
- Accession number :
- edsair.doi.dedup.....3f08ef71e7caa745fdf3839bab7ba4c4